冷却塔是许多主要工艺应用中使用的主要部件之一；冷却塔性能的任何降低都会严重影响主流程。不足的主要原因之一是湿热空气从冷却塔出口再循环回冷却塔进气口。再循环发生时，冷却塔入口的平均湿球温度升高，导致冷却塔和相关工艺设备的效率损失，达到可能导致设备故障的极限。目前的工作旨在使用计算流体力学CFD研究导致冷却塔再循环的方面，以确定冷却塔布局的建议和注意事项，以尽量减少再循环，确保稳定高效的运行。 这项研究的重点是通过对气流热特性和水分含量的调查来预测冷却塔周围的气流模式。利用计算流体力学（CFD）研究了风向、风速和冷却塔顶部布置对冷却塔再循环的影响。这项研究代表了对不同风速、风向下再循环的参数研究；风机出口速度、风机烟囱高度、女儿墙百叶窗位置和女儿墙高度。引文:2018年冬季会议，伊利诺伊州芝加哥，会议论文

Cooling Towers are one of the main components utilized in numerous major processes applications; any decrease in the cooling tower performance highly affects the main process. One of the major causes of deficiency is the recirculation of hot humid air from the cooling tower outlet back into the cooling tower air intake. As recirculation occurs, the average entering wet bulb temperature at the intake of cooling tower increases which results in efficiency loss at the cooling towers and accordingly the associated process equipment up to the limit that it might causes malfunction of the equipment. The present work aimed to study the aspects leading to cooling tower recirculation using Computational Fluid Dynamics CFD to determine recommendations and considerations for cooling towers layout to minimize recirculation and ensure stable and efficient operation. The study focuses on predicting the air flow patterns around cooling towers via investigation of air flow thermal properties and moisture content. The work utilized computational fluid dynamics (CFD) to investigate the effect of wind direction, wind velocity and cooling towers roof arrangement on cooling towers recirculation. This investigation represents a parametric study on recirculation at different winds speeds, direction; fans exit velocities, fan stack height, parapet wall louvers location, and parapet wall height.